ceph/src/boost/libs/compute/include/boost/compute/detail/duration.hpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 // See http://boostorg.github.com/compute for more information.
   9 //---------------------------------------------------------------------------//
  10
  11 #ifndef BOOST_COMPUTE_DETAIL_DURATION_HPP
  12 #define BOOST_COMPUTE_DETAIL_DURATION_HPP
  13
  14 #include <boost/config.hpp>
  15
  16 #ifndef BOOST_COMPUTE_NO_HDR_CHRONO
  17 #include <chrono>
  18 #endif
  19
  20 #include <boost/chrono/duration.hpp>
  21
  22 namespace boost {
  23 namespace compute {
  24 namespace detail {
  25
  26 #ifndef BOOST_COMPUTE_NO_HDR_CHRONO
  27 template<class Rep, class Period>
  28 inline std::chrono::duration<Rep, Period>
  29 make_duration_from_nanoseconds(std::chrono::duration<Rep, Period>, size_t nanoseconds)
  30 {
  31     return std::chrono::duration_cast<std::chrono::duration<Rep, Period> >(
  32         std::chrono::nanoseconds(nanoseconds)
  33     );
  34 }
  35 #endif // BOOST_COMPUTE_NO_HDR_CHRONO
  36
  37 template<class Rep, class Period>
  38 inline boost::chrono::duration<Rep, Period>
  39 make_duration_from_nanoseconds(boost::chrono::duration<Rep, Period>, size_t nanoseconds)
  40 {
  41     return boost::chrono::duration_cast<boost::chrono::duration<Rep, Period> >(
  42         boost::chrono::nanoseconds(nanoseconds)
  43     );
  44 }
  45
  46 } // end detail namespace
  47 } // end compute namespace
  48 } // end boost namespace
  49
  50 #endif // BOOST_COMPUTE_DETAIL_DURATION_HPP